Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760935Ab1D2Tz6 (ORCPT ); Fri, 29 Apr 2011 15:55:58 -0400 Received: from mx2.mail.elte.hu ([157.181.151.9]:33605 "EHLO mx2.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759857Ab1D2Tz5 (ORCPT ); Fri, 29 Apr 2011 15:55:57 -0400 Date: Fri, 29 Apr 2011 21:55:48 +0200 From: Ingo Molnar To: Boris Ostrovsky Cc: x86@kernel.org, linux-kernel@vger.kernel.org, jvpeetz@web.de, borislav.petkov@amd.com, boris.ostrovsky@amd.com Subject: Re: [PATCH] Subject: [PATCH] x86, AMD: K8 Rev.A-E processors are subject to erratum 400 Message-ID: <20110429195548.GA17166@elte.hu> References: <1304106663-3720-1-git-send-email-ostr@amd64.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1304106663-3720-1-git-send-email-ostr@amd64.org> User-Agent: Mutt/1.5.20 (2009-08-17) X-ELTE-SpamScore: -2.0 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-2.0 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.3.1 -2.0 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1081 Lines: 27 * Boris Ostrovsky wrote: > Signed-off-by: Boris Ostrovsky > Acked-by: Borislav Petkov > Reported-by: Joerg-Volker Peetz > Tested-by: Joerg-Volker Peetz > > Older AMD K8 processors (Revisions A-E) are affected by erratum 400 (APIC > timer interrupts don't occur in C states greater than C1). This, for example, > means that X86_FEATURE_ARAT flag should not be set for these parts. > > This addresses regression introduced by commit > b87cf80af3ba4b4c008b4face3c68d604e1715c6 (x86, AMD: Set ARAT feature on AMD > processors") so it is somewhat high priority. Hm, what is the regression, how do users see it? Hangs? Delays? Crashes? Something more benign? The changelog should really contain such information. Thanks, Ingo -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/